<template>
  <div class="app-container">
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="courseQuery.status" clearable placeholder="课程状态">
          <el-option value="Normal" label="已发布"/>
          <el-option value="Draft" label="未发布"/>
        </el-select>
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()">查询</el-button>
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!-- 表格 -->
    <el-table :data="list" border fit highlight-current-row>
      <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" />

      <el-table-column label="课程状态">
        <template slot-scope="scope">
          {{ scope.row.status==='Normal'?'已发布':'未发布' }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数" />

      <el-table-column prop="gmtCreate" label="添加时间" />

      <el-table-column prop="viewCount" label="浏览数量" />

      <el-table-column label="操作" align="center">
        <template slot-scope="scope">
          <router-link :to="'/edu/course/info/'+scope.row.id" style="line-height: 40px;">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程基本信息</el-button>
          </router-link>
          <router-link :to="'/edu/course/chapter/'+scope.row.id" style="line-height: 40px;">
            <el-button type="primary" size="mini" icon="el-icon-edit">编辑课程大纲息</el-button>
          </router-link>
          <div style="line-height: 40px;">
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeDataById(scope.row.id)">删除课程信息</el-button>
          </div>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页 -->
    <el-pagination :current-page="page" :page-size="limit" :total="total" @current-change="getList"
      style="padding: 30px 0; text-align: center;" layout="total, prev, pager, next, jumper" />

  </div>
</template>
<script>
import courseApi from '@/api/edu/course'

export default {
  data() { // 定义变量和初始值
    return {
      list: [],// 查询之后接口返回集合
      page: 1,// 当前页
      limit: 10,// 每页记录数
      total: 0,// 总记录数
      courseQuery: {}// 条件封装对象
    }
  },
  created() { // 页面渲染之前执行，一般调用methods定义的方法
    this.getList();
  },
  methods:{  // 创建具体的方法，调用teacher.js定义的方法
    // 讲师列表的方法
    getList() {
      courseApi.pageCourse(this.page, this.limit, this.courseQuery).then(response =>{//请求成功
        // response接口返回的数据
        this.list = response.data.list;
        this.total = response.data.total;
      }) 
    },
    resetData() {// 清空的方法
      // 表单输入项数据清空
      this.courseQuery = {};
      // 查询所有讲师数据
      this.getList();
    },
    removeDataById(courseId) {
      this.$confirm('此操作将删除课程信息, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        courseApi.deleteCourse(courseId).then(response => {
          // 提示信息
          this.$message({
            type: 'success',
            message: response.message
          });
          // 刷新页面
          this.getList();
        })
      })
    }
  }
}
</script>